Hi, Again I'd like to ask you some help. Since I have no idea what is wrong in my TeX(gwTeX), I tried from the beginning. I removed installed gwTeX, and reinstalled MacTeX-2007 package. I checked the followings: $ kpsewhich texmf.cnf /usr/local/texlive/2007/texmf/web2c/texmf.cnf $ kpsewhich --expand-var='$TEXMFCNF' {/usr/local/texlive/2007/bin/powerpc-darwin,/usr/local/texlive/2007/ bin,/usr/local/texlive/2007}{,{/share,}/texmf{-local,}/web2c}:/. $ kpsewhich --expand-var='$TEXMF' {/Users/dalyoung/.texlive2007/texmf-config,/Users/ dalyoung/.texlive2007/texmf-var,/Users/dalyoung/Library/texmf,!!/usr/ local/texlive/2007/texmf-config,!!/usr/local/texlive/2007/texmf- var,!!/usr/local/texlive/2007/texmf,!!/usr/local/texlive/2007/../ texmf-local,!!/usr/local/texlive/2007/texmf-dist} I also copied luatex and mtxrun in the folder /usr/texbin. texexec --make --all {--pdftex, --xetex} worked fine and make formats properly. After that I run "luatools --generate", then it is not working properly. The messages are $ luatools --generate LuaTools | skipping /usr/texbin/texmf-local/web2c/texmf.cnf LuaTools | skipping /usr/texbin/texmf/web2c/texmf.cnf LuaTools | LuaTools | runtime: 0.03 seconds I don't know why it is looking for texmf.cnf under the binary folder(/ usr/texbin). Would you please tell me what is wrong in my installation? Thank you for your help. Best regards, Dalyoung